| Metasomatic anorthosite formed by replacement of layered gabbroic troctolite in the Skaergaard intrusion is shown here. |
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| This magmatism is typically of gabbroic to granitic composition and also shows evidence of mixed sedimentary and mantle-like sources. |
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| The question is whether ceramics known as gabbroic pottery, including Trevisker ware, include gabbro-rock minerals added as a temper. |
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| This is based on preservation of original gabbroic textures and occurrence of intergranular coesite in UHP rocks. |
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| In the most complete survey of what is called the Rock Hill gabbro, Chalcraft mapped a large area of gabbroic anorthosite at the site where the preserve is located. |
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| Of far less importance are occurrences in gneisses and amphibolites, in small plutons derived from syenitic and gabbroic magmas, and in certain contact-metamorphic rocks. |
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| Leg 118 recovered 500 meters of gabbroic rocks that formed in a magma chamber beneath the very slow-spreading Southwest Indian Ridge. |
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| Hornblende is found in some of the summit samples, as are small gabbroic, plagioclase-magnetite, and ultramafic xenoliths that may represent disaggregated cumulates. |
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| Copper-Nickel mineralization in the area has been traced by prospecting for more than 2 km within late gabbroic dykes along northeast controlling structures. |
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| The drilling has intersected packages of both cumulate and intrusive style magnetite-ilmenite mineralisation intercalated with gabbroic and anorthositic country rock. |
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| The target is entirely overburden covered and four widely spaced drill holes put down in the anomaly intersected layered gabbroic to anorthositic gabbroic rocks. |
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| The drilling has intersected stacked packages of both cumulate and intrusive style magnetiteilmenite mineralisation intercalated with gabbroic and anorthositic country rock. |
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| For instance, a magma of gabbroic composition can produce a residual melt of granitic composition if early formed crystals are separated from the magma. |
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| Besides, the presence of ubiquitous intrusive bodies that are either doleritic or gabbroic has been delineated in the Bornu Basin by Carter et al. |
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| A drilling expedition towards the Earth's centre would mean digging through sediment, a layer of basalt, and then hit the gabbroic layer, which lies directly above the mantle. |
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